soft RF spring helping or hurting?

[Dirtmod13]

We have played with a soft rf spring and it seems like we are losing LR drive with it in the slick. Just re-read an article from Mark Bush saying people put in a soft rf and while it looks like its planting the rf harder it actually doesnt,and does not help with drive. Yet all the cars builders say to go softer in the slick. Rocket says 375 then 350/325 in the slick.

[MasterSbilt_Racer]

There is more to a fast lap than drive. If you simply bolt on a softer rf spring, you will lose dynamic wedge. That is correct.

That change could be positive if you have too much LR drive before the change. Properly loaded rear tires, that share the load, is how you go forward

[25drtrkr]

Mr. Bush has repeatedly stated, also, to take some of the rebound out of the rf shock.

[MasterSbilt_Racer]

Mr. Bush has repeatedly stated, also, to take some of the rebound out of the rf shock.

And, Mr Bush may or may not be correct depending on your dynamic wheel rate behavior.

[Dirtmod13]

So if the soft rf takes away traction then why do the builders say to run softer?

[Dirtmod13]

As the summer has made our track more dry, our soft rf has slowed us down

[MasterSbilt_Racer]

So if the soft rf takes away traction then why do the builders say to run softer?

It doesn't remove traction. It goes to other tires.

[25drtrkr]

If the CoG stays the same, the weight removed from the rf will transfer to the rr, generally making the car tighter on entry.

[rakracing]

mastersbilt is correct, also agree with 25dtr, whats it doing in and in the middle, bad there and off sucks to, I like enough rf spring to not bottom out the frame and soften or stiffen the lf to help in then play with rebound in rf for off. mark calls it a imbalance of traction

[billetbirdcage]

It's rare in the slick that the person with the most drive off the corner wins, least if your not racing locally, on some paperclip stop and go racetrack, or a one lane track.

Drive off the corner is the last thing I generally ever worry about, momentum in and thru the corner generally always takes care of drive off the corner.

If you are constantly complaining about drive off the corner, you might need to reevaluate your racing program, IMO.

[Dirtmod13]

Our real issue is lr drive. Seems like the soft rf ( which as suggested by the chassis builder during setup) is the reason we can't get any lr traction. Car is loose as hell. Can go through corner but only quarter/ half throttle. Off ain't so bad.

[Kromulous]

If your going to run the soft RF spring, wouldnt that in turn make the RR spring that much more critical on corner exit, all the way thru actually?

[swartzman]

refer back to post #10.. and yes the rr spring has a lot to do with what people are running in the right front.. you can bet there was a lot of trial and error getting their cars back to running fast again with the soft right front..

[swingarm4life]

Tire rule?

[Dirtmod13]

Hard tires

[3wheelinphotos]

How about are you doing anything in the rear to make more traction or just changing the RF spring?

[Dirtmod13]

Giving lr more drop and less rear steer to tighten mid and exit. Just doesn't seem to be enough. Can't run stacked or bumps

[HuckleberryB4]

More Drop = More rear steer = Loose
Less Drop = Less rear steer = Tighter

[hsdiefusion16]

What is the rule for bumpstops and stacked springs?

[7uptruckracer]

Those are two completely different animals